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pshichka [43]
3 years ago
12

I don’t understand please help

Chemistry
2 answers:
dexar [7]3 years ago
6 0
It’s C)H2SO4
Good luck
lina2011 [118]3 years ago
4 0
I agree the answer is C according to my research about it
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why it was important to use dishwashing gloves over nitrile gloves for distillation experiment and when IR plates are cleaned.
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Matter is composed of basic substances called what
Andreyy89
The basic substances are called elements
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3 years ago
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2. Solid sodium reacts with gaseous chlorine to produce sodium chloride.
stich3 [128]
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8 0
3 years ago
What is the frequency of a photon having an energy of 4.91 × 10–17 ? (c = 3.00 × 108 m/s, h = 6.63 × 10–34 J · s)​
AlexFokin [52]

Answer:

The frequency of the photon is 7.41*10¹⁶ Hz

Explanation:

Planck states that light is made up of photons, whose energy is directly proportional to the frequency of radiation, according to a constant of proportionality, h, which is called Planck's constant. This is expressed by:

E = h*v

where E is the energy, h the Planck constant (whose value is 6.63*10⁻³⁴ J.s) and v the frequency (Hz or s⁻¹).

So the frequency will be:

v=\frac{E}{h}

Being E= 4.91*10⁻¹⁷ J and replacing:

v=\frac{4.91*10^{-17} J}{6.63*10^{-34} J.s}

You can get:

v= 7.41*10¹⁶ \frac{1}{s}= 7.41*10¹⁶ Hz

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4 0
3 years ago
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